Improvement in stitch-imitation and stitch-dividing mechanisms



c. s. nwam-s x,

"*Stit'cb; imitation -am3mm awnin Mechanisms. 158,632, Patented Jan. 12,1875

Ito-a slot in the head-piece.

' seen in drawings.) Betweenthe arms a and e", and surroumling theshaft, is a spiral spring, 0

Un'rrnn CHARLES S. DUNBR'AGK, OF SWAMPSOQTT, MASSACHUSETTS, ASSIGNOR TO THOMAS COREY, TRUSTEE.

IMPROVEMENT IN STlTCHlMlTAT|0N AND'STITCHDlVIDlNG MECHANISMS.

Specification formingpart of Letters Patent No- 155,632, dated January 1 2, 1875; application filed v February 2.8, 1814.

To all whom it may concern Be it known that I, CHARLES S; DUNBRAGK, of Swampscott, in the county of Essex and State ofMassachnsetts, have invented a Stitch- Imitation and Stitch-Dividing. Machine, 0 which the following is a specification:

The invention relates to a machine for marking leatherin imitation of stitches, and for dividin g stitches sewed in leather; and has for its object the ornamenting of the uppcr'snrface of the projection of the soles of boots and shoes with impressions resembling stitches, and also for dividing'and evening stitches sewed-in leather. I

The machine consists of a frame, A, (see Figure 1 in the accompanying drawings,) having a movable jaw, 11. Said jaw 11 has attached to it the shaft 13, with gear upon one end of s'aidshaft meshing into the gear it upon the shaft t. Upon the other end ofsaid shaft iis the impressing or inarkin g wheel a; and said wheel a has its teeth convex in their-outer The impression made by this collar forms an outer border to the imitation stitch, and also prevents the leather from curling up outside of the stitch impression. Above the impression-wheel a isia double head-piece, c upon the end of the jaw 12. Said head-piece is mov-' able and adjustable by a screw, 8. .(SeeF-ig, 3.) Said head-piece also bearsa yieldingcircular guard, 0, whose shaft is held between the perforated armscl and c of the head-piece, (see Fig. 2,) with a pin in the-shaft playing-in- (Said slot isnot As the impression-wheel settles into the leather the guard rises, but is pressed upon the leather by the spring. This circular guard forms abead orline impression onthe inside of the imitation stitch. Stl(;'fCII'Cllltl-l guard also, being thin, bends in close up to the upper leather in marking soles. The'head-piecc c, with or without removing the wheel a and guard a, may be turned so as to bring the adjusting stitch-divider (I over the table or disk '0, and the same be adjusted to 'the work to be done, setting the gage f, &e. By operating the treadle m with the foot, the workman can raise the arms are and l, lifting the movable jaw 10, so that the divider (I may be brought down between sewed stitches, which require evening in order to make the workmore ornamental and perfect. With practice, the workman may operate this part of the ornamentation with rapidity.

The form of the divider d is seen in Figs. 1

and 2. Upouthe lower end of the rod 1 is a spiral spring, l and a nut,- l underneath the frame A. Thespring steadies the treadle motion, as well as assists in bringing down the divider, and presses, also, a constant pressure upon the jaw 1). Under the end of the jaw 12, near the wheel a, (see Fig. 3,) is a screw, 5', which may serve to raise or depress the head a. f is an adjustable gage, (see Figs. 2 and 3,)

against which the leather is'held, the gage serving to guide the marking nearer-or more remote from the edge of the leather. K is a screw, and K a slotted clamp, (see Figs. 1 and 3,) the former beiu g attached to the frame A, and the latter to the jaw 12, and they together serve to move the-head of. the marking or dividing mechanism lengthwise. o is arevolving table or disk, upon which the leather tov be marked is held, whether underthe whecl ordivider.

It will be observed (see Figs. 1 and 3) that said table ordisk'o is inclined at an obtuse angle to the wheel a and the divider d. The revolutionof the table 0 and the wheel c beingin the same direction and by the; same 'power that moves the table, carries the leather up under and along with the wheel; but, on account of its inclination, the tendency to carry the leather away from the Wheelceases at a point at the center of the wheel, or at the highest poiut of the table. The table operates-as a feed-wheel, with the advantage of abetter surface on which to hold the leather to, be

marked or the work to .be done nndcrthe wheel a or divider t1, the support 0' and bev eled gear 9 and 9 operating the revolution of the table, as seen in Fig. 1.-

There is also a gas-tube, r, attached to the machine. The heat of the flame'is carried under theshaft i. This serves to warm the wheel a, and it is well known that the-impression made by a heated tool upon leather is firmer and more even and lasting, on account of the hardening efl'ect of heat upon leather. The machine is operated with power applied at h by means of the gear-wheels h h h k I am aware that machines have been used for marking stitch-like impressions upon leather. In this application I do not claim any invention in use; but

What I do claim as my invention, and de-,

sire to secure by Letters Patent, is the follow- 111g: g

1. An imitation-stitch impressing-wheel, at, having concave furrows, for the purpose shown and described.

2. The combination of the imitation-stitch impressing-wheel a and the collar I), having concave furrows, for the purpose shown and described.

3. The combination of the imitation-stitch wheel a, the collar b, and the circular guard 0, for the purpose shown and described.

' 4. The combination of the imitation-stitch impressingwheel a, the collar b, the circular;

guard c, the gage f, and the disk 0, all operating together substantially as and'for the purpose shown and described.

, 5. The stitchdivider'd upon the headpiece. e, in combination with the movable jaw 10, the

rod 1, and pedal m m,all operating together ,with' the disk 0 and the gage f, for the purpose 

